Originally Posted by EBuyuk
I am guessing:
Exhaust Systems 2-5hp
Straight Pipes (Resonators) 0hp
Cold Air Intake Systems 17-20hp
LTW Pulley Kits 15hp
However, I am sure that they will come out with a limited slip differential. I am not sure what gear ratio the M3 comes with but in my E60 M5 the ratio was 3.62 and I put the 3.91 diff. from Dinan and there was a 8% torque increase and it made a huge difference. You felt like the car had just recieved another 40-50hp.
yup...I agree with you.
The E92 M3 has 3.84 final drive ratio, and tall rear tires at 18/265/40. I think 2nd gear max at 72 mph. By changing to shorter final drive to 4.1 or 4.45, acceleration will even stronger.